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Nonlinear two-dimensional finite element modeling of permanent magnet eddy current couplings and brakes

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6 Author(s)
Nehl, T.W. ; Dept. of Electr. & Electron., Gen. Motors Res. & Dev. Center, Warren, MI, USA ; Lequesne, B. ; Gangla, V. ; Gutkowski, S.A.
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A two-dimensional finite element model is developed to model the electromagnetic behavior of permanent magnet type eddy current couplers under constant speed operation. The model accounts for the nonlinearity of the steel flux paths and is verified using test measurements from a prototype eddy current coupler. The proposed solution differs from conventional magnetostatic finite element models in that an unknown current-density distribution must be determined through an iterative process. The model is used to study the influence of certain design parameters on the torque-speed characteristics of such devices

Published in:

Magnetics, IEEE Transactions on  (Volume:30 ,  Issue: 5 )

Date of Publication:

Sep 1994

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